When Chen Hui received 9,917.23 yuan ($1,555) from China Construction Bank on Friday, he was relieved.
Chinese police have arrested 15 suspects in a bank card fraud case, whose illegal gains were estimated at 10 million yuan ($1.6 million).
Chinese experts warned of increasing loopholes in online safety as new technologies and applications pose fresh challenges to information security.
Nearly 5 million users of Android-based smartphones were infected with Trojan horse in 2011, with 8.53 million computers hit by attempted attacks each day.
The websites posed as accredited media entities that threatened to disclose "negative information" about their victims, authorities said.
Chinese police have apprehended 1,936 suspects in an ongoing campaign against the illegal trading of individuals' private information.
An old version of IE may cause security risks to Web surfers and increase the chances of their PCs being attacked by viruses.
Trading people's private information could be outlawed under a draft bill being considered in Hebei province.
Dun & Bradstreet Corp, a US commercial information company, said on Monday that its employees in China may have violated the US Foreign Corrupt Practices Act and other laws in its China operations, and it has suspended operations at its Shanghai units pending investigations.
Private information about elementary and secondary school students and their families is for sale online, which legal experts say constitutes an invasion of privacy.
More than 1,700 people were arrested on suspicion of stealing or misusing personal information.
Lawmakers and political advisers have called for laws that would further safeguard personal information.